Nicolas Sarkozy's become the first French ex-president to go to jail.

He's started a five-year sentence for conspiring to fund his election campaign with money from late Libyan dictator Muammar Gaddafi. 

Sarkozy, who was president from 2007-2012, has appealed against his jail term at La Santé prison, where he will occupy a small cell in its isolation wing.

UK/Europe Correspondent Gavin Grey has the latest.